simplified constructor calls

fixed typo in javadoc

src/main/java/it/unibz/inf/isochrone/algorithm/MrneX.java

@@ -29,7 +29,7 @@ public class MrneX extends Isochrone {
 	// Constructors
 
 	public MrneX(final ConfigDataset config, final Query query) throws AlgorithmException {
-		this(config, null, query, Integer.MAX_VALUE);
+		this(config, null, query);
 	}
 
 	public MrneX(final ConfigDataset config, final Database db, final Query query) throws AlgorithmException {
@@ -41,9 +41,9 @@ public class MrneX extends Isochrone {
 
 		adjList = new HashMap<>();
 		loadedIERNodes = new HashMap<>();
-		nodes = new HashMap<>();
 		maxDuration = query.getDuration().intValue();
 		maxMemory = maxMemorySize;
+		nodes = new HashMap<>();
 		walkingSpeed = query.getWalkingSpeed();
 	}
 
@@ -155,7 +155,7 @@ public class MrneX extends Isochrone {
 	}
 
 	/**
-	 * Do we have unlimited memory available (or don't we care
+	 * Do we have unlimited memory available (or do not care
 	 * about how much memory we will be using)?
 	 *
 	 * @return true if there is unlimited memory, false otherwise